Cooking-stove.



J. G. DUNGAN.

COOKING STOVE.

APPLICATION man JAN. 1a. 1915. 1,158,655.

Patented Nov. 2, 1915.

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J. G. DUNGAN.

C'OOKING STOVE.

APPLICATION FILED JAN. 13. 1915.

Patented Nov. 2, 1915.

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JAMES GIIDUNGAN, or LQS Antennas, CALIFORNIA, nssieivon on ONE-HALF T0CHARLES H. 000K, or

MINNEAPOLIS, MINNESOTA.

cooxnve-srovn Application filed January 13, 1915.

scription of the invention, such as WillGIb able others skilled in theart to which it appertains to make and use the same.

My invention relates to ranges, or other cooking stoves having ovens,and has for its object to improve the construction of the draft passageover the top of the oven,

whereby a more even distribution of the heat on the top of the stove andoven are attained.

Generally stated, the invention consists of the novel construction andcombination of parts hereinafter described and defined in the claims.

Hitherto, it has been the common practice to provide these stoves, abovethe oven and immediately under the griddle and top plate of the stove,with flame passages of constant conducting capacity, measured on anyline transversely of the stove, or in other. words, transversely of theline of draft. With such arrangement, it has been noted that the maximumdraft is over the central portion of the top of the oven, or under thecentral portion of the top of the stove, so that the flames tendtoconcentrate, producing the greatest heating efiect on a line extendingcentrally from front to rear of the top of the stove. Otherwise stated,the greatest heating effect is at the center and this heating effectdiminishes in both directions toward the back and front of the oven. 1obviate this defect by constructing the above noted flame passagev witha varying cross section having its minimum depth at the central portionof the top of the oven and having an increasing depth in both directionstherefrom, to-wit, from the center toward the back and front of thestove or range. This is best accomplished by forming the oven with a topplate that is arched toward its center on straight lines, much. afterthe fashion of a slightly inclined gable roof. This gives a crosssection which constantly increases from the center and is thought to bethe most desirable form, but, nevertheless,

the varying cross section required to offset Specification of LettersPatent.

mately on the line 09 w Patented Nov. 2, 1915, Serial No. 1,947,

the tendency of the draft to concentrate the flames at the center lineof the stove, may be accomplished otherwise, than by the above notedpreferred arrangement. In the accompanying drawings which illustrate theinvention, like characters indicate like parts throughout the severalviews. Referringto the drawings: Figure l is a plan view of the stovewith some parts sectioned and with the top plate thereof removed Fig. 2is a vertical section taken approximately on the line :0 27 on Fig. 1,some parts being shown in full; Fig. 3 is a transverse section takenthrough the stove approximately on the line m m on Fig. 1; Fig. 4 is afragmentary transverse section taken approxion Fig. 1; Fig. 5 is anenlarged fragmentary section taken approximately onthe lin 00 m on Fig.4; and Fig. 6 is a perspective view showing the arched top plate of theoven removed from the stove.

The cooking stove shown is of the type usually designated as a range,and of the parts thereof, the numeral 1 indicates the base,the numeral 2the main outer shell, the numeral 3 the oven, the numeral 4: the firepot, the numeral 5 the grate, the numeral 6 the top plate of the stove,and having the usual griddle 7, and the numeral 8 the smoke pipe, all ofwhich parts, except as hereinafter noted, may be of standard or anysuitable construction. 7

' The oven 3, instead of having a flat top, as 1s customary, or alongitudinally arched top, as has hitherto been proposed, is providedwith an arched or gabled top 3 the ridge of which is spaced from the topof the stove, and extends centrally and longitudinally thereof, so thatthe varying cross section above indicated is given to the flame passageY immediately over the top of the oven and under the top of the stove.

The back fire brick lining 9 of the fire pot may be of the usualconstruction, made either in one or more sections, except that the upperedge portion thereof should follow the outline of the front edge of thetop of the oven.

The above described arrangement causes the flames, in passing over thetop of the oven, to evenly distribute themselves, and to maintain aneven degree of temperature at transversepoints on the top of the ovenand at all transverse points on'the top of the stove, and from this, itof course follows,

that the heat will be equally distributed under the griddles.

What I claim is:

1. A cooking stove having an oven and a fire pot and provided with aflame passage extended from said fire pot between the top of said ovenand the top plate of the stove,

tends longitudinally under the central portion of the top plate ofthefstove, thereby in presence of two witnesses.

depth transversely of the flamepassage.

3.- The combination with a cooking stove having a fire pot and an oven,said oven having a transversely arched top afiording a flame passageabove said oventhat increasesin depth in both directions from .thecentering line of draft, of a back lining in said fire pot, which, atits upper edge, follows the line of the arched top of said 'oven. Intestimony whereofl aflix my signature JAMES G. DUNGAN. Witnesses: r f

JAMns P. WINTERS, E. W. K0011.

Copies of this patent may be obtained for five cents each, by addressingthe Commis sionerjof'Patents, Washington, D. C. r V

